I think the same stat block can fit the two alignments.
I don't think the LN one needs to turn undead, since neutral gets to choose (think Wee Jas). Maybe we could do the substitute SLAs as an underbar?Well I think we should have two variants, a LN Jackal-headed and a LE one with the head of a Typhonic Beast, but use the same stats with a couple of SA/SQ alterations to align them with positive/negative energy or evil/law.
I.e. the Typhonic version has rebuke undead, the Jackal version has turn undead, and some of its SLA abilities are different. (e.g. protection from good for the Set-Mummy, protection from chaos for the Anubis-Mummy, dictum or order's wrath for the Anubis-Mummy, unholy blight or blasphemy for the Set-Mummy).
2 different monsters, then? Ok with me, more conversion fun!

(Dungeons & Dragons)
Rulebook featuring "high magic" options, including a host of new spells.